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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Changes in accumulated other comprehensive income (loss) by component, net of tax    
Beginning balance $ 1,319,112 $ 1,270,069
Unrealized gains (losses) on debt securities available for sale:    
Unrealized holding gains (losses) on debt securities available for sale, Tax Effect (29,726) (11,993)
Unrealized holding gains (losses) on debt securities available for sale, Net of Tax (74,556) (30,079)
Unrealized losses on debt securities transferred from held to maturity to available for sale, Tax Effect 13,812  
Unrealized losses on debt securities transferred from held to maturity to available for sale, Net of Tax (34,644)  
Amounts reclassified from AOCI, Tax Effect 30 7
Amounts reclassified from AOCI, Net of Tax (76) (18)
Amortization of unrealized losses on securities transferred to held to maturity, Tax Effect 252  
Amortization of unrealized losses on securities transferred to held to maturity, Net of Tax (631)  
Unrealized gains (losses) on cash flow hedges:    
Unrealized holding gains (losses) on cash flow hedges, Tax Effect (1,931)  
Unrealized holding gains (losses) on cash flow hedges, Net of Tax (4,845) 410
Amounts reclassified from AOCI, Tax Effect (143)  
Reclassification adjustment for realized (gains) losses on cash flow hedges included in net income, net of taxes of $143 and ($79), respectively (357) 199
Ending balance 1,218,025 1,265,822
AOCI    
Changes in accumulated other comprehensive income (loss) by component, net of tax    
Beginning balance (23,758) 33,309
Unrealized gains (losses) on cash flow hedges:    
Accumulated other comprehensive income (loss) ending balance period, Before Tax (192,467) 5,344
Accumulated other comprehensive income (loss) ending balance period, Tax Effect 54,862 (1,523)
Ending balance (137,605) 3,821
Unrealized gains (losses) on debt securities available for sale    
Changes in accumulated other comprehensive income (loss) by component, net of tax    
Accumulated other comprehensive income (loss) beginning balance period, Before Tax (32,272) 49,644
Accumulated other comprehensive income (loss) beginning balance period, Tax Effect 9,199 (14,151)
Beginning balance (23,073) 35,493
Unrealized gains (losses) on debt securities available for sale:    
Unrealized holding gains (losses) on debt securities available for sale, Before Tax (104,282) (42,072)
Unrealized holding gains (losses) on debt securities available for sale, Tax Effect 29,726 11,993
Unrealized holding gains (losses) on debt securities available for sale, Net of Tax (74,556) (30,079)
Unrealized losses on debt securities transferred from held to maturity to available for sale, Before Tax (48,456)  
Unrealized losses on debt securities transferred from held to maturity to available for sale, Tax Effect 13,812  
Unrealized losses on debt securities transferred from held to maturity to available for sale, Net of Tax (34,644)  
Amounts reclassified from AOCI, Before Tax (106) (25)
Amounts reclassified from AOCI, Tax Effect 30 7
Amounts reclassified from AOCI, Net of Tax (76) (18)
Amortization of unrealized losses on securities transferred to held to maturity, Before Tax 883  
Amortization of unrealized losses on securities transferred to held to maturity, Tax Effect (252)  
Amortization of unrealized losses on securities transferred to held to maturity, Net of Tax 631  
Unrealized gains (losses) on cash flow hedges:    
Accumulated other comprehensive income (loss) ending balance period, Before Tax (184,233) 7,547
Accumulated other comprehensive income (loss) ending balance period, Tax Effect 52,515 (2,151)
Ending balance (131,718) 5,396
Unrealized gains (losses) on cash flow hedges    
Changes in accumulated other comprehensive income (loss) by component, net of tax    
Accumulated other comprehensive income (loss) beginning balance period, Before Tax (958) (3,055)
Accumulated other comprehensive income (loss) beginning balance period, Tax Effect 273 871
Beginning balance (685) (2,184)
Unrealized gains (losses) on cash flow hedges:    
Unrealized holding gains (losses) on cash flow hedges, Before Tax (6,776) 574
Unrealized holding gains (losses) on cash flow hedges, Tax Effect 1,931 (164)
Unrealized holding gains (losses) on cash flow hedges, Net of Tax (4,845) 410
Amounts reclassified from AOCI, Before Tax (500) 278
Amounts reclassified from AOCI, Tax Effect 143 (79)
Reclassification adjustment for realized (gains) losses on cash flow hedges included in net income, net of taxes of $143 and ($79), respectively (357) 199
Accumulated other comprehensive income (loss) ending balance period, Before Tax (8,234) (2,203)
Accumulated other comprehensive income (loss) ending balance period, Tax Effect 2,347 628
Ending balance $ (5,887) $ (1,575)